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5.0L (1979-1995) MustangTechnical discussions on 5.0 Liter Mustangs within. This does not include the 5.0 from the 2011 Mustang GT. That information is in the 2005-1011 section.
am I going to be any where close the 300 hp mark or what can I reasonably expect?
It's definitely not out of the quesiton, a lot has to do with the tune and other supporting mods, but people have made well over 300whp with AFR 165s on stock bottom end 302s.